Calibrachoa Million Bells Trailing Yellow ('Suncalkuki') (Million Bells Series)

RHS Plant Profile

calibrachoa [Million Bells Trailing Yellow]

RHS / Joanna Kossak

Synonyms

Calibrachoa 'Suncalkuki'

Annual Biennial

An evergreen perennial typically grown as an annual with trailing stems and small, ovate leaves. Trumpet-shaped flowers with mid-yellow centres and paler yellow outer edges are produced in profusion from early summer into autumn

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity: 1 year
Max Spread: 0.1-0.5 metres
Max Height: 0.1-0.5 metres

Growing Conditions

Chalk Clay Loam Sand

Moisture: Moist but well–drained or Well–drained
pH: Acid or Alkaline or Neutral

Position

Full sun

Aspect: South–facing or West–facing
Exposure: Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

H1A: under glass all year (>15C)
H1B: can be grown outside in the summer (10 - 15)
H1C: can be grown outside in the summer (5 - 10)
H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
H4: hardy through most of the UK (-10 to -5)
H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
H6: hardy in all of UK and northern Europe (-20 to -15)
H7: hardy in the severest European continental climates (< -20): H2

Colour & Scent

Season	Stem	Flower	Foliage	Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family: Solanaceae
Native to GB/Ireland: No
Foliage: Evergreen
Habit: Trailing
Genus: Calibrachoa are tender woody-based perennials usually grown as annuals, mostly trailing in habit, with simple leaves and petunia-like, trumpet-shaped flowers over a long period
Name Status: Trade

How to Grow

Cultivation

Grow in a sunny, sheltered site. Ideal for pots and hanging baskets

Propagation

Propagate by softwood cuttings

Suggested planting locations and garden types

City and courtyard gardens
Cottage and informal garden
Patio and container plants
Flower borders and beds

Pruning

No pruning required

Pests

May be susceptible to aphids, slugs and snails

Diseases

May be susceptible to grey moulds, foot rot and a virus